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Dear Visitors, April 21, 2017

Thank you for stopping at FlatEarthLunacy.com

As a scientist with college degree in Astronomy, minor in Physics and Mathematics, I was appalled to find folks telling outright falsities and presenting bad science to bolster suspicion of our known accepted reality - that the Earth is a beautiful blue globe.

This blog clearly shows scientific proofs that debunk everything that flat Earth proponents claim. Here we also expose the comments those YouTube video channels delete, because they don't want you to see them.

The Earth is not flat. That claim is a conspiracy theory perpetrated by ignorant people who have ulterior personal motives and agendas.

The Earth is a beautiful blue spheroid globe spinning on an axis 23.5° once each day, and orbiting the Sun every 365.25 days.

kind regards, Jonah The Scientist

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Flat Earth NOT - First stellar occultation by the Galilean Moon Europa - what does this epic even mean?

First stellar occultation by the Galilean Moon Europa - what does this epic even mean?
A direct real observational measurement of the actual size of the moon Europa has now been obtained.

Astronomy & Astrophysics
https://www.aanda.org/articles/aa/abs/2019/06/aa35500-19/aa35500-19.html

Abstract

Context. Bright stellar positions are now known with an uncertainty below 1 mas thanks to Gaia DR2. Between 2019–2020, the Galactic plane will be the background of Jupiter. The dense stellar background will lead to an increase in the number of occultations, while the Gaia DR2 catalogue will reduce the prediction uncertainties for the shadow path.

Aims. We observed a stellar occultation by the Galilean moon Europa (J2) and propose a campaign for observing stellar occultations for all Galilean moons.

Methods. During a predicted period of time, we measured the light flux of the occulted star and the object to determine the time when the flux dropped with respect to one or more reference stars, and the time that it rose again for each observational station. The chords obtained from these observations allowed us to determine apparent sizes, oblatness, and positions with kilometre accuracy.

Results. We present results obtained from the first stellar occultation by the Galilean moon Europa observed on 2017 March 31. The apparent fitted ellipse presents an equivalent radius of 1561.2 ± 3.6 km and oblatenesses 0.0010 ± 0.0028. A very precise Europa position was determined with an uncertainty of 0.8 mas. We also present prospects for a campaign to observe the future events that will occur between 2019 and 2021 for all Galilean moons.

Conclusions. Stellar occultation is a suitable technique for obtaining physical parameters and highly accurate positions of bright satellites close to their primary. A number of successful events can render the 3D shapes of the Galilean moons with high accuracy. We encourage the observational community (amateurs included) to observe the future predicted events.

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What is an occultation?

An occultation is an event that occurs when one object is hidden by another object that passes between it and the observer (see image below). A stellar occultation by small bodies occurs when an object (Europa, Eris, asteroid, our Moon, etc.) passes in front of a star (occults a star) temporarily blocking its light.

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Video example:
Lunar occultation of Jupiter - December 25, 2012, by Rafael Defavari
https://www.youtube.com/watch?v=L7fwcy-W4hE

The Moon moving in front of Jupiter and slowly covering it up...

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Published on – August 1, 2019

Discussion at - https://www.youtube.com/channel/UC7ipUKERU0tzYFxALJBli4A/discussion

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kind regards, JonahTheScientist